XS0043 005 (AB)

The pipeline

      <p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
         <p:output port="result"/>        
         
         <p:identity>
            <p:with-input><a-doc xmlns=""/></p:with-input>
         </p:identity>
         <p:if test="true()">
            <p:with-input port="source"><doc xmlns=""/></p:with-input>
               <p:identity>
                  <p:with-input><true xmlns=""/></p:with-input>
               </p:identity>
         </p:if>
         
      </p:declare-step>